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BSTO Ferroelectric-Based Meander-Type Tunable Phase Shifter  

Chai, Dongkyu (Graduate School of Information and Communication University)
Linh, Mai (Graduate School of Information and Communication University)
Yim, Munhyuk (Graduate School of Information and Communication University)
Yoon, Giwan (Graduate School of Information and Communication University)
Publication Information
Journal of the Korea Institute of Information and Communication Engineering / v.6, no.6, 2002 , pp. 904-908 More about this Journal
Abstract
In this paper, we propose a 4-coupled ferroelectric-based meander-type microstrip-line tunable phase shifter which has less than 2dB of insertion loss (IL) and larger than 10dB of return loss (RL)over 13~170Hz .Particularly at 15GHz, the differential phase shift (DPS) is observed to be $89{\circ}$ at zero bias and it increases up to $115{\circ}$ when 150V is applied. This indicates a DPS tunability of $26{\circ}$.
Keywords
DPS; ferroelectric; tunability; insertion loss; return loss;
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